Results 21 to 30 of about 16,590,157 (303)

FLRW Universe in f(R,Lm) Gravity with Equation of State Parameter

open access: yesEast European Journal of Physics, 2023
Available observational data regarding current cosmological characteristics suggest that the universe is, to a large extent, both isotropic and homogeneous on a large scale.
Bhupendra Kumar Shukla   +3 more
doaj   +1 more source

Estimation of HIV infection mathematical model]{Estimation of HIV infection mathematical model parameters using modified LHPM [PDF]

open access: yesMathematics and Computational Sciences, 2023
In this paper, modified laplace homotopy perturbation method(LHPM) is implemented to give approximate and analytical solutions of nonlinear ordinary differential equation systems model for HIV infection .
Mitra Moeini, Mehrzad Ghorbani
doaj   +1 more source

Price, Complexity, and Mathematical Model

open access: yesMathematics, 2023
The whole world has entered the era of the Vuca. Some traditional methods of problem analysis begin to fail. Complexity science is needed to study and solve problems from the perspective of complex systems.
Na Fu, Liyan Geng, Junhai Ma, Xue Ding
doaj   +1 more source

A mathematical model of mechanotransduction

open access: yesAcademia Biology, 2023
This article reviews the mechanical bidomain model, a mathematical description of how the extracellular matrix and intracellular cytoskeleton of cardiac tissue are coupled by integrin membrane proteins.
Bradley J. Roth
doaj   +1 more source

Mathematical modelling in science and mathematics education [PDF]

open access: yesComputer Physics Communications, 2011
Scientific research involves mathematical modelling in the context of an interactive balance between theory, experiment and computation. However, computational methods and tools are still far from being appropriately integrated in the high school and university curricula in science and mathematics.
Vítor Duarte Teodoro, Rui Gomes Neves
openaire   +3 more sources

Regularization of a mathematical model of the Wheatley heart valve [PDF]

open access: yes, 2022
This note considers the mathematical model published in the Journal of Biomechanical Engineering by McKee et al. [McKee, S., Cuminato, J. A., Stewart, I. W., and Wheatley, D.
McKee, Sean   +4 more
core  

Contact Estimation in Robot Interaction

open access: yesInternational Journal of Advanced Robotic Systems, 2014
In the paper, safety issues are examined in a scenario in which a robot manipulator and a human perform the same task in the same workspace. During the task execution, the human should be able to physically interact with the robot, and in this case an ...
Filippo D'Ippolito   +2 more
doaj   +1 more source

基本弱Hopf代数和弱覆盖箭图(Basic weak Hopf algebra and weak covering quiver)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2016
We introduce a finite-dimensional basic and split weak Hopf algebra H over an algebraically closed field k with strongly graded Jacobson radical r. We obtain some structures of a finite-dimensional basic and split semilattice graded weak Hopf algebra,and
AHMEDMunir(穆尼尔•艾哈迈德)   +1 more
doaj   +1 more source

Attitude Control Synthesis for Small Satellites Using Gradient Method. Part I - Nonlinear Equations

open access: yesINCAS Bulletin, 2012
The paper presents some aspects for synthesis of small satellites attitude control. Thesatellite nonlinear model presented here will be with six degrees of freedom.
Teodor-Viorel CHELARU   +2 more
doaj   +1 more source

Mathematical model for producing machine parts [PDF]

open access: yesE3S Web of Conferences, 2021
In the article, the object of research is the development of a technology for improving the operational properties of cast parts from steel 45, obtained by the method of electroslag remelting. Based on the research results, the modes of heat treatment of
Karimov Kamolkhon   +3 more
doaj   +1 more source

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